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Displaying records 91 to 100 of 790 records.
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91. Isotope Dilution Liquid Chromatography - Mass Spectrometry Methods for Fat- and Water-Soluble Vitamins in Nutritional Formulations
Topic: Chemistry
Published: 11/24/2011
Authors: Karen W Phinney, Catherine A Rimmer, Jeanice M Brown Thomas, Lane C Sander, Katherine E Sharpless, Stephen A Wise
Abstract: Vitamins are essential to human health, and dietary supplements containing vitamins are widely used by individuals hoping to ensure they have adequate intake of these important nutrients. Measurement of vitamins in nutritional formulations is necess ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905146

92. Density functional theory study of the gamma-MnOOH (010) surface: Response to oxygen and water partial pressures
Topic: Chemistry
Published: 11/15/2011
Authors: Gloria A. (Gloria E) Oxford, Anne M. (Anne M.) Chaka
Abstract: Ab initio thermodynamics was combined with density functional theory calculations to identify stable gamma-MnOOH (010) surface terminations in response to varying oxygen and water partial pressures. Within the range of accessible oxygen chemical po ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908713

93. Interlaboratory Analytical Comparison Study to Support Deepwater Horizon Natural Resource Damage Assessment: Description and Results for Marine Sediment QA10SED01
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7792
Topic: Chemistry
Published: 11/2/2011
Authors: Michele M Schantz, John Kucklick
Abstract: To support natural resource damage assessment (NRDA) in response to the Deep Water Horizon (DWH) oil spill in the Gulf of Mexico, a large number of coastal sediment and tissue samples (i.e., oysters) have been collected to define baseline environme ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907886

94. Findings and Recommendations from the Joint NIST ‹ AGA Workshop on Odor Masking
Series: Journal of Research (NIST JRES)
Report Number: 116.026
Topic: Chemistry
Published: 11/1/2011
Authors: Thomas J Bruno, Nancy Rawson, Ali Quaraishi
Abstract: Since the days of the alchemist, the observation that some substances have a smell while other substances do not has been a source of fascination. The sense of smell, or olfaction, is our least understood sense, however it is important for many hum ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908417

95. Linkage Disequilibrium Analysis of D12S391 and vWA in U.S. Population and Paternity Samples
Topic: Chemistry
Published: 11/1/2011
Authors: Kristen E. Lewis, Carolyn R Hill, Peter M Vallone, John M Butler
Abstract: Recently, the European Network of Forensic Science Institutes voted to adopt five additional STR loci (D12S391, D1S1656, D2S441, D10S1248, and D22S1045) to their existing European Standard Set of seven STRs (TH01, vWA, FGA, D8S1179, D18S51, D21S11, a ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905553

96. Determination of Moisture Content of Single-Wall Carbon Nanotubes
Topic: Chemistry
Published: 10/17/2011
Authors: Rolf Louis Zeisler, Rabia Oflaz, Ralph E. Sturgeon, Rick L Paul, Brian E Lang, Jeffrey A Fagan, Joseph W Lam, Anthony Windust, P Grinberg, Benoit Simard, Christopher T. Kingston
Abstract: Several techniques were evaluated for the establishment of reliable water/moisture content of single-wall carbon nanotubes. Karl Fischer titration (KF) provides for a direct measure of the water content and was used for benchmarking against results ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908873

97. Chromatographic Sample Collection from Two Phase (gas + liquid) Flows
Topic: Chemistry
Published: 10/12/2011
Authors: Thomas J Bruno, Bret Windom
Abstract: A particularly challenging sample presentation in analytical chemistry is a flowing stream that consists of both a gas and liquid phase, in the situation in which an analysis is needed for both phases, separately. In these cases, the vapor and liqui ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908129

98. Assessment of the Composition and Distillation Properties of Thermally Stressed RP-1 and RP-2: Application to Fuel Regenerative Cooling
Topic: Chemistry
Published: 9/28/2011
Authors: Bret Windom, Thomas J Bruno
Abstract: In this work, we measured the volatility of thermally stressed samples of RP-1 and RP-2 rocket kerosenes by use of the advanced distillation curve method. This work is part of a large program at NIST and other laboratories geared toward improving th ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908525

99. Reaction Mechanism Governing the Formation of 1,3-bis(diphenylphosphino)propane-protected Gold Nanoclusters
Topic: Chemistry
Published: 9/19/2011
Authors: Jeffrey W Hudgens, John M Pettibone, Thomas P Senftle, Ryan N. Bratton
Abstract: This report outlines the determination of a reaction mechanism that can be manipulated to develop directed syntheses of gold monolayer protected clusters (MPCs) prepared by the reduction of solutions containing 1,3-bis(diphenylphosphino)propane (L^u3 ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909874

100. Effect of AlN Buffer Layer Properties on the Morphology and Polarity of GaN Nanowires Grown by Molecular Beam Epitaxy
Topic: Chemistry
Published: 9/8/2011
Authors: Matthew David Brubaker, Kristine A Bertness, Norman A Sanford, Albert Davydov, Igor Levin, Devin M. Rourke, Victor M. Bright
Abstract: Low temperature AlN buffer layers grown by plasma-assisted Molecular Beam Epitaxy (MBE) on Si (111) were found to significantly affect the subsequent growth morphology of GaN nanowires. The AlN buffer layers exhibited nanowire-like columnar protrusi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=908715



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